Digital Snake

Q.What is the recommended communication protocol for a switching hub used with the Digital Snake system?

A.The S-4000 Digital Snake System uses the REAC (Roland Ethernet Audio Communication) interface for data transfer through a standard Ethernet cable. To be used with REAC, an Ethernet switching hub must meet the following requirements:

• 1000BASE-T transmission speed (IEEE802.3ab, Gigabit Ethernet)
• Support for 100BASE-TX devices (IEEE802.3u, Fast Ethernet)
• Bi-directional (full-duplex) communication
  Connect REAC devices only to switching hub ports that support 100BASE-TX.
  
  Consult the switching hub's documentation for information on its proper use.
  
  Note:
  The transmission protocol for REAC is based on 100BASE-TX (Fast Ethernet). To transfer 40 channels of digital audio, REAC uses the full bandwidth of this protocol. However, some 100BASE-TX switching hubs cannot handle this amount of data traffic. Gigabit Ethernet switching hubs can handle a larger amount of data traffic, so we recommend them for use with REAC devices (just be sure that the Gigabit switching hub you use supports 100BASE-TX devices).
  

(2006/04/04)

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